On the Solid Solution Sm1+xBa2-xCu3Oy
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摘要: 用X射線衍射及氧含量分析法測定了Sm1+xBa2-xCu3Oy固溶區域為0 ≤ x ≤ 0.4。當x<0.25時,Sm1+xBa2-xCu3Oy屬正交晶系;x=0.25時,發生從正交到四方的相變;在整個固溶區域內,Tc隨x的增加而下降,直至淬滅。同時探討了Sm1+xBa2-xCu3Oy化合物在不同的淬火溫度、氧含量與晶體結構、超導電性的關系。
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關鍵詞:
- 固溶體/高溫氧化物超導體 /
- 淬火溫度 /
- 氧含量
Abstract: ByX-ray powder diffraction technique and oxygen content analysis, a solid solution Sm1+xBa2-xCu3Oy was determined with the solid solution region in 0 ≤ x ≤ 0.4. When x<0.25, the Sm1+xBa2-xCu3Oy presents orthorhombic symmetry, and the orthorhombic-tetragonal transition occurs at x=0. 25. With the increase of x, Tc decreases and finally breaks off. The correlation between oxygen content and phase structure at different quench temperature related to SmBa2Cu3Oy, was investigated as well. -

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